XIAFLEX is contraindicated in patients with a history of
hypersensitivity to XIAFLEX or to collagenase used in any
other therapeutic application or application method
In the controlled and uncontrolled portions of clinical trials
in Dupuytren’s contracture, flexor tendon ruptures occurred
after XIAFLEX injection. Injection of XIAFLEX into
collagen-containing structures such as tendons or ligaments of
the hand may result in damage to those structures and possible
permanent injury such as tendon rupture or ligament damage.
Therefore, XIAFLEX should be injected only into the collagen
cord with a metacarpophalangeal (MP) or proximal
interphalangeal (PIP) joint contracture, and care should be
taken to avoid injecting into tendons, nerves, blood vessels,
or other collagen-containing structures of the hand. When
injecting a cord affecting a PIP joint of the fifth finger,
the needle insertion should not be more than 2 to 3 mm in
depth and avoid injecting more than 4 mm distal to the palmar
digital crease
Other XIAFLEX-associated serious local adverse reactions in
the controlled and uncontrolled portions of the clinical
studies included pulley rupture, ligament injury, complex
regional pain syndrome (CRPS), sensory abnormality of the
hand, and skin laceration (tear). In a historically controlled
post-marketing trial, the incidence of skin laceration (22%)
was higher for subjects treated with two concurrent injections
of XIAFLEX compared with subjects treated with up to three
single injections in the placebo-controlled premarketing
trials (9%). Post-marketing cases of skin laceration requiring
skin graft after finger extension procedures and local skin
and soft-tissue necrosis, some requiring skin grafting, or
other surgical interventions including finger amputation have
been reported. Signs or symptoms that may reflect serious
injury to the injected finger/hand should be promptly
evaluated because surgical intervention may be required
Cases of syncope and presyncope have been reported in the
post-marketing period in patients treated with XIAFLEX. In
most cases in patients with Dupuytren’s contracture, the
injection procedure, finger extension procedure, or pain
following the procedures were reported as potential triggers
for the events, suggesting a vasovagal mechanism. Most, but
not all, cases occurred in the immediate treatment period
(injection or finger extension procedure) or within 1 to 2
days following the injection or finger extension procedure. If
presyncopal symptoms occur, patients should remain recumbent
until symptoms resolve. Syncope may be associated with bodily
injuries, including concussion, head abrasion, and other
accidental injuries
In the controlled portions of the clinical trials in
Dupuytren’s contracture, a greater proportion of
XIAFLEX-treated patients (15%) compared to placebo-treated
patients (1%) had mild allergic reactions (pruritus) after up
to 3 injections. The incidence of XIAFLEX-associated pruritus
increased after more XIAFLEX injections in patients with
Dupuytren’s contracture
Because XIAFLEX contains foreign proteins, severe allergic
reactions to XIAFLEX can occur. Anaphylaxis was reported in a
post-marketing clinical trial in one patient who had previous
exposure to XIAFLEX for the treatment of Dupuytren’s
contracture. Healthcare providers should be prepared to
address severe allergic reactions following XIAFLEX injections
In the XIAFLEX trials in Dupuytren’s contracture, 70% and 38%
of XIAFLEX-treated patients developed an ecchymosis/contusion
or an injection site hemorrhage, respectively. Patients with
abnormal coagulation (except for patients taking low-dose
aspirin, eg, up to 150 mg per day) were excluded from
participating in these studies. Therefore, the efficacy and
safety of XIAFLEX in patients receiving anticoagulant
medications (other than low-dose aspirin, eg, up to 150 mg per
day) within 7 days prior to XIAFLEX administration is not
known. In addition, it is recommended to avoid use of XIAFLEX
in patients with coagulation disorders, including patients
receiving concomitant anticoagulants (except for low-dose
aspirin)
In the XIAFLEX clinical trials for Dupuytren’s contracture,
the most common adverse reactions reported in ≥25% of patients
treated with XIAFLEX and at an incidence greater than placebo
were edema peripheral (eg, swelling of the injected hand),
contusion, injection site hemorrhage, injection site reaction,
and pain in the injected extremity
Post-marketing experience
– Syncope and presyncope have been reported in patients
treated with XIAFLEX. Most, but not all, cases occurred in the
immediate treatment period or within 1 to 2 days following
injection. Bodily injuries associated with the syncopal events
have been reported
INDICATION
XIAFLEX is indicated for the treatment of adult patients with
Dupuytren’s contracture with a palpable cord.